Coordinate Reference Systems
Remarks
Emulation of transformation NTF to ETRS89-FRA [RGF93 v2b] (1), code 9889. Note that grid file parameters are of opposite sign. Parameter file is from ETRS89-FRA [RGF93 v1] to NTF (code 15958), assuming that ETRS89-FRA [RGF93 v1] is equivalent to ETRS89-FRA [RGF93 v2b] within the accuracy of the CT.
Frequently Asked Questions
What is the accuracy of the ETRS89-FRA [RGF93 v2b] to NTF transformation?
This transformation (EPSG:9891) has an accuracy of 1m using the NTv2 method. Area of use: France - onshore - mainland and Corsica.